LITTLE ROCK — The Arkansas highway department is exploring the reasons for flooding on Interstate 30 near the border of Pulaski and Saline counties.

The highway flooded on Nov. 21, resulting in all six lanes being closed for three hours. Two years before, the stretch of highway flooded on Christmas Eve, closing for 10 hours.

The section of highway was widened and rebuilt in 2005 at a cost of $35 million.

The Arkansas Democrat-Gazette reported engineers are obtaining hydrological data for the area to help determine whether the design of the highway is outdated or whether rain simply exceeded the design standard.